If you are looking for red or green dot sights that will fit on your Sig P320 or Sig M17/M18 without the need for extra adapter or filler plates then keep scrolling. *Note your slide must be optics ready and must have a Romeo 1 Pro Cut!
The optics listed below all come with a DeltaPoint Pro footprint and will fit any Sig P320, M17, or M18 with a Romeo 1 Pro slide.
You can identify your Romeo 1 Pro slide by making sure you have a curved front part of the slide cut out.
EOTECH EFLX REFLEX SIGHT 3 MOA TAN - EFLX3RWTAN
$339.00Unit price /UnavailableIn stock (84 units)
EOTECH EFLX REFLEX SIGHT 3 MOA BLK - EFLX3RWBLK
$339.00Unit price /UnavailableIn stock (235 units)
Vortex Defender ST 3 MOA Green Dot Sight, DPP Footprint, DFST-MGD3
$299.99Unit price /UnavailableVery low stock (3 units)-
Sig Sauer Clear ROMEO-RS Pro (DPP - DeltaPoint Pro) Red Dot - Circle Dot
$199.99Unit price /Unavailable 
Leupold Delta Point Pro Reflex Sight, 2.5 MOA Red Dot, Flat Dark Earth (FDE) Finish - LP175840
$449.99Unit price /Unavailable-
Vortex Defender XL FDE 5 MOA Red Dot Sight, DPP Footprint, DFXL-MRD5-T
$399.99Unit price /UnavailableVery low stock (4 units) -
$449.00Unit price /Unavailable -
![Sig Sauer Romeo X Pro Green Dot, DPP Footprint, Black Housing, 3 MOA, 6MOA, Circle Dot]()
![Sig Sauer Romeo X Pro Green Dot, DPP Footprint, Black Housing, 3 MOA, 6MOA, Circle Dot]()
Sig Sauer Romeo X Pro Green Dot, DPP Footprint, Black Housing, 3 MOA, 6MOA, Circle Dot
From $469.99Unit price /Unavailable -
![Sig Sauer Romeo X Pro Enclosed Green Dot, DPP Footprint, Enclosed Emitter, Black Housing, 3 MOA, 6 MOA, Circle Dot]()
![Sig Sauer Romeo X Pro Enclosed Green Dot, DPP Footprint, Enclosed Emitter, Black Housing, 3 MOA, 6 MOA, Circle Dot]()
From $569.99Unit price /Unavailable -
Sig Sauer Romeo X Pro FDE Enclosed Red Dot, Circle Dot, DPP Footprint, Enclosed Emitter, FDE Housing
$569.99Unit price /Unavailable -
![Sig Sauer Romeo RS Pro Green Dot, DPP Footprint, Black Housing]()
Sig Sauer Romeo RS Pro Green Dot, DPP Footprint, Black Housing
$189.99Unit price /UnavailableIn stock (25 units) -
Leupold Delta Point Pro, 2.5MOA Red Dot, Night Vision Compatible, Matte Black - LP179585
$549.99Unit price /UnavailableVery low stock (7 units) -
SIG ROMEO2 REFLEX SIGHT 3 MOA BLACK - SOR21300
$699.99Unit price /UnavailableVery low stock (8 units) -
About Direct Fit Optics For Sig Pistols
Our Direct Fit Optics collection for Sig P320, M17, and M18 pistols is crafted to enhance your shooting precision and performance with a perfect fit for your Sig pistols. Direct-fit optics eliminate the need for adapters or modifications, allowing for a streamlined installation and reducing the risk of shifting or misalignment during use.
Ideal for professional shooters, competitors, and dedicated enthusiasts, this collection offers the accuracy, speed, and reliability you need in any situation.
Key Features:1. Seamless Integration: Each optic is specifically engineered to align flawlessly with Sig P320, M17, and M18 models, providing optimal alignment and stability during operation.
2. Advanced Optics Technology:These optics offer superior clarity and rapid target acquisition, with precision-engineered reticles designed for accurate shooting. Built to withstand demanding conditions, their shock-resistant construction ensures exceptional durability.
These optics are designed for exceptional durability, providing reliable performance you can count on when every shot matters. With enhanced accuracy and user-friendly adjustments, you’ll gain the confidence to perform at your best, whether at the range or in critical situations. Explore our curated collection to find the ideal optic for your Sig P320, M17, or M18, and elevate your shooting experience.
